1142203431 has 8 divisors (see below), whose sum is σ = 1564098544. Its totient is φ = 740888640.

The previous prime is 1142203427. The next prime is 1142203451. The reversal of 1142203431 is 1343022411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142203431 - 2² = 1142203427 is a prime.

It is a super-2 number, since 2×1142203431² = 2609257355576343522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142203398 and 1142203407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142203451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5144950 + ... + 5145171.

It is an arithmetic number, because the mean of its divisors is an integer number (195512318).

Almost surely, 2^1142203431 is an apocalyptic number.

1142203431 is a deficient number, since it is larger than the sum of its proper divisors (421895113).

1142203431 is a wasteful number, since it uses less digits than its factorization.

1142203431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290161.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1142203431 is about 33796.5002773956. The cubic root of 1142203431 is about 1045.3165348349.

Adding to 1142203431 its reverse (1343022411), we get a palindrome (2485225842).

The spelling of 1142203431 in words is "one billion, one hundred forty-two million, two hundred three thousand, four hundred thirty-one".